581396 has 6 divisors (see below), whose sum is σ = 1017450. Its totient is φ = 290696.

The previous prime is 581393. The next prime is 581407. The reversal of 581396 is 693185.

581396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 448900 + 132496 = 670^2 + 364^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 581396.

It is not an unprimeable number, because it can be changed into a prime (581393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72671 + ... + 72678.

It is an arithmetic number, because the mean of its divisors is an integer number (169575).

2⁵⁸¹³⁹⁶ is an apocalyptic number.

It is an amenable number.

581396 is a deficient number, since it is larger than the sum of its proper divisors (436054).

581396 is a wasteful number, since it uses less digits than its factorization.

581396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145353 (or 145351 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 581396 is about 762.4932786589. The cubic root of 581396 is about 83.4623636665.

The spelling of 581396 in words is "five hundred eighty-one thousand, three hundred ninety-six".